# Assuming there was a spaceship that could counter-act the effects of falling into a black hole, could a human observe the hole dissipating?

The most common explanation of what would happen to a space-ship that falls into a black hole ends with spaghettification.

However imagine there was a space-ship built out of unobtanium, that could provide enough artificial gravity to counter-act the effects of the black hole on the ship's contents. As the ship is falling into the hole, gravity is increasing, which in turn slows down the relative passage of time. Eventually billions of years pass "on the outside" and the black hole evaporates through Hawking radiation, which reduces the event horizon and allows the ship to escape.

Could this scenario be used to allow a hypothetical astronaut to travel billions of years into the future in the duration of a regular human life?

• If the effects of falling into it can be counteracted then it is not a black hole, by definition. This is exactly the kind of premiss which contains its own negation. – AlexP Nov 30 '16 at 13:55
• @AlexP couldn't a sufficiently strong material withstand being inside the event horizon? – JonathanReez Nov 30 '16 at 13:59
• The event horizon is the place where the direction towards the black hole becomes timelike, that is, the direction towards the black hole becomes the future and the direction away from the black hole becomes the past. Locally the event horizon is nothing special; the only problem is that when an object is inside the event horizon it cannot escape, because the direction away from the black hole is in it's past. – AlexP Nov 30 '16 at 14:06
• I think you might be able to avoid some of AlexP's arguments by rewording. "Falling into a black hole" typically means you passed the event horizon, which even Stephen Hawking considers to be a one way trip if you want to call yourself "human" on the way out. It sounds like you just want to get very near the event horizon. This is a more tractable problem because it lets our space-ship remain in a region of space-time that's much easier to work out the math on. However, you will need something like anti-gravity, and the implications of that are.. odd. – Cort Ammon Nov 30 '16 at 14:20
• I'll give u the benefit of doubt and say everything goes according to ur plan, billions and billions of years later assuming the black hole do evaporate wouldn't that leaves nothing... – user6760 Nov 30 '16 at 14:21